Eye Hortilux LU400S/HTL/EN Super HPS (12/Cs)
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These Eye Hortilux Super High Pressure Sodium (HPS) bulbs provide 25% more lighting energy in the violet, blue and green lighting spectrum than traditional high pressure sodium bulbs. The combination of Super HPS and the Metal Ace conversion bulb provides the optimal lighting spectrum energy levels throughout every stage of plant growth. The "EN" designation means that this bulb is environmentally friendly in that it passes EPA and TCLP test criteria as non-hazardous waste.